S
M
T
W
T
F
S
30
85°
59°
31
76°
70°
1
90°
72°
2
73°
69°
3
89°
76°
4
88°
74°
5
81°
66°
6
76°
62°
7
82°
59°
8
83°
56°
9
87°
66°
10
90°
73°
11
82°
63°
12
78°
71°
13
81°
70°
14
80°
62°
15
73°
63°
16
80°
64°
17
85°
66°
18
82°
64°
19
75°
59°
20
73°
58°
21
72°
58°
22
70°
55°
23
71°
59°
24
73°
56°
25
73°
55°
26
68°
53°
27
72°
59°
28
76°
58°
29
75°
57°
30
69°
54°
1
68°
54°
2
69°
57°
3
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Long Branch
Long Branch's September 2026 forecast shows daily high temperatures ranging from 68° to 85°, with overnight lows between 53° and 71°. The average high for September is 74° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Long Branch. See also: October | November | December.